8351949321 has 27 divisors (see below), whose sum is σ = 12382010407. Its totient is φ = 5424851040.

The previous prime is 8351949247. The next prime is 8351949343. The reversal of 8351949321 is 1239491538.

It is a happy number.

The square root of 8351949321 is 91389.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 402443721 + 7949505600 = 20061^2 + 89160^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8351949321 is a prime.

It is a super-2 number, since 2×8351949321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8351949371) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11240476 + ... + 11241218.

Almost surely, 2^8351949321 is an apocalyptic number.

8351949321 is the 91389-th square number.

8351949321 is the 45695-th centered octagonal number.

It is an amenable number.

8351949321 is a deficient number, since it is larger than the sum of its proper divisors (4030061086).

8351949321 is an frugal number, since it uses more digits than its factorization.

8351949321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 787 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The cubic root of 8351949321 is about 2028.9092250460.

The spelling of 8351949321 in words is "eight billion, three hundred fifty-one million, nine hundred forty-nine thousand, three hundred twenty-one".